Optimum Nutrition Gold Standard Pre-Workout is a premium energy and focus supplement designed for fitness enthusiasts. It features 175 mg of caffeine for energy, 3 grams of creatine for strength, and beta-alanine to delay fatigue. Enhanced with L-citrulline for pumps and B-vitamins, it boosts performance and endurance, helping you power through workouts effectively. A trusted choice for pre-exercise preparation.